51145201366 has 32 divisors (see below), whose sum is σ = 88164910080. Its totient is φ = 21797756736.

The previous prime is 51145201363. The next prime is 51145201391. The reversal of 51145201366 is 66310254115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51145201363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2688195 + ... + 2707153.

It is an arithmetic number, because the mean of its divisors is an integer number (2755153440).

Almost surely, 2^51145201366 is an apocalyptic number.

51145201366 is a deficient number, since it is larger than the sum of its proper divisors (37019708714).

51145201366 is a wasteful number, since it uses less digits than its factorization.

51145201366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20028.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 51145201366 in words is "fifty-one billion, one hundred forty-five million, two hundred one thousand, three hundred sixty-six".